package com.hafu.dao;

import com.hafu.model.KhInfo;
import com.hafu.util.DbUtil;
import com.hafu.util.StringUtil;

import java.sql.*;
import java.util.ArrayList;

public class KhInfoDao {
    public Boolean addKhInfo(KhInfo kh){
        String sql = "insert into khinfo values(null,?,?)";
        Connection conn = DbUtil.getConn();
        try {
            PreparedStatement preparedStatement = conn.prepareStatement(sql);
            preparedStatement.setString(1,kh.getName());
            preparedStatement.setString(2,kh.getTel());
            int i = preparedStatement.executeUpdate();
            if (i>0){
                System.out.println("添加成功");
                return true;
            }else return false;
        } catch (SQLException throwables) {
            throwables.printStackTrace();
        }
        return false;
    }

    //根据客户名字模糊查询客户信息
    public ArrayList<KhInfo> getKhInfoByName(KhInfo kh){
        ArrayList<KhInfo> list = new ArrayList();
        Connection conn = DbUtil.getConn();
        String sql = "select * from khinfo ";
        if (!StringUtil.isEmpty(kh.getName())){
            sql = sql + " where name like '%"+kh.getName()+"%'";
        }
        try {
            PreparedStatement preparedStatement = conn.prepareStatement(sql);
            ResultSet resultSet = preparedStatement.executeQuery();
            while (resultSet.next()){
                int id = resultSet.getInt("id");
                String name = resultSet.getString("name");
                String tel = resultSet.getString("tel");
                KhInfo khInfo = new KhInfo(id,name,tel);
                list.add(khInfo);
            }
        }catch (SQLException throwables){
            throwables.printStackTrace();
        }
        return list;
    }
    //修改某一个客户信息
    public Boolean updateKhInfo(KhInfo kh){
        String sql = "update khinfo set name=?,tel=? where id=?";
        Connection conn = DbUtil.getConn();
        try {
            PreparedStatement preparedStatement = conn.prepareStatement(sql);
            preparedStatement.setString(1,kh.getName());
            preparedStatement.setString(2,kh.getTel());
            preparedStatement.setInt(3,kh.getId());
            int i = preparedStatement.executeUpdate();
            if (i>0){
                System.out.println("修改成功");
                return true;
            }else return false;
        }catch (SQLException throwables){
            throwables.printStackTrace();
        }
        return false;
    }
    //根据客户id删除客户
    public Boolean deleteKhInfo(int id){
        String sql = "delete from khinfo where id=?";
        Connection conn = DbUtil.getConn();
        try {
            PreparedStatement preparedStatement = conn.prepareStatement(sql);
            preparedStatement.setInt(1,id);
            int i = preparedStatement.executeUpdate();
            if (i>0){
                System.out.println("删除成功");
                return true;
            }else return false;
        } catch (SQLException throwables) {
            throwables.printStackTrace();
        }
        return false;
    }
}
